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1. (WO1998049803) DATA INTEGRITY AND AUTHENTICATION DEVICE AND METHOD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049803 International Application No.: PCT/US1998/008207
Publication Date: 05.11.1998 International Filing Date: 21.04.1998
Chapter 2 Demand Filed: 05.11.1998
IPC:
H04L 9/32 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
32
including means for verifying the identity or authority of a user of the system
Applicants:
LIU, Zunquan [CN/US]; US
Inventors:
LIU, Zunquan; US
Agent:
YAU, Philip ; Majestic, Parsons, Siebert & Hsue P.C. Four Embarcadero Center Suite 1100 San Francisco, CA 94111-4106, US
Priority Data:
08/845,80325.04.1997US
Title (EN) DATA INTEGRITY AND AUTHENTICATION DEVICE AND METHOD
(FR) DISPOSITIF D'AUTHENTIFICATION ET DE MAINTIEN D'INTEGRITE DE DONNEES ET TECHNIQUE AFFERENTE
Abstract:
(EN) The data validation system (10) comprises a source data encoder (100) and a retrieved data validator (200), both operating under the control of a shared key. The source data encoder (100) is used to produce a validation code that is associated with the source document. The retrieved data validator (200) checks, with the aid of the validation code, if the retrieved document is valid. The source data encoder (100) includes a mapping module (120) that has an input (122) for receiving a source document to be encoded and another input (124) for receiving a key. A validation code is output from the mapping module (120) via an output (126).
(FR) Ce système de validation de données (10) est constitué d'un codeur de données de source (100) et un programme de validation de données extraites (200), commandés tous deux par une clef partagée. Le codeur de données source (100) produit un code de validation associé au document source. Le programme de validation de données extraites (200) recherche, d'après le code de validation, si le document extrait est correct. Le codeur de données de source (100) comporte un module de mappage (200) possédant un organe d'entrée destiné à la réception du document source à coder ainsi qu'un autre un organe d'entrée (124) destiné à la réception d'une clef. Du module de mappage (120) sort un code de validation via un organe de sortie (126).
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1998073615